[joveian]

Kitty terminal is about half python as well with extension opportunities and would probably be a good early project opportunity for some people.

https://github.com/kovidgoyal/kitty

Also, renpy is used for a number of games, including some commercial games, so modifiying an existing game would be another option. (As a side note, I wish someone would make a python point and click adventure equivalent of renpy since for being such basic games they very often have major technical issues).